[PATCH v6 00/12] NVIDIA Tegra memory controller and IOMMU support

Alexandre Courbot acourbot at nvidia.com
Mon Nov 10 01:53:30 PST 2014

On 11/08/2014 01:00 AM, Thierry Reding wrote:
> From: Thierry Reding <treding at nvidia.com>
> This is the sixth installment in the Tegra IOMMU and memory controller
> support series. This version addresses the final outstanding comments from
> Olof about using proper Kconfig symbols to track the dependencies. It also
> splits up the driver into one part that implements the memory controller
> only and a second part that implements the SMMU. This plays nicely with
> the new Kconfig options introduced.
> Patch 1 is a preparatory patch that exposes the memory controller clock.
> Patches 2 and 3 is a pair of precursory patches needed to make this all
> work on 64-bit ARM in the future.
> The device tree binding for the Tegra memory controller is added in patch
> 4 and patch 5 is the bulk of the series that move the existing memory
> controller and IOMMU drivers into the new unified driver that supports
> Tegra30, Tegra114 and Tegra124.
> Patches 6, 7 and 8 add the DT nodes for the memory controller/IOMMU on
> Tegra30, Tegra114 and Tegra124.
> IOMMU support is enabled for the display controllers in patches 9, 10 and
> 11. This will allow the display controllers to have their memory accesses
> translated by the SMMU, which will enable non-contiguous buffers to be
> used for scan-out.
> Finally patch 12 also adds support for Tegra132. It is kept separate because
> none of the other Tegra132 patches have been merged yet, but I've included
> it here for completeness.
> Because the patches are rather intertwined, I'd like to merge them all via
> the Tegra tree. For that I'll need Acked-bys from Mike, Russell and Joerg
> on patches 1, 2 and 3, and 5, respectively.


Tested-by: Alexandre Courbot <acourbot at nvidia.com>

Works nicely with both the display and GPU clients, which allows us to 
remove the need for CMA on Tegra.


More information about the linux-arm-kernel mailing list